Currently you can only filter on what type of activity to display in the case timeline, but not on who is the sender or receiver of an e-mail. As we use the case timeline for both external as well as internal e-mail, I would like to filter out internal e-mails from the portal case timeline.

Showing all e-mails on the portal timeline is not an option for us, but not displaying any e-mails limits the information provisioning to the customer. An additional filter option on the activity Portal Timeline view for filtering on e-mail sender and receiver would be great.